When you study the local map, you’ll find this town is ______ .

A．twice as a large town as that

B．twice the size of that one

C．twice as larger as that one

D．twice as larger a town as that

预制构件安装作业中，从安全的角度考虑，不必( )。

A．安装大型盆式橡胶支座时，墩顶两侧应搭设操作平台；

B．起吊大型及有突出边棱的构件时，应在钢丝绳与构件接触的拐角处设垫衬；

C．单面配筋的盖板上应标明起吊标志；

D．进行预压试验，以检查支架的承载能力和稳定性，消除非弹性变形。